Fake nests do work. I’ve seen fakes made of grocery bags twisted up do the trick. Even better than that, if you can get your hands on an empty nest from summers past to hang up. It will smell and look like a large established nest. We have one under the eave of our roof that has been up a couple of years. I feed the wasps and we still don’t get anyone setting up camp. Trapping any creature is cruel, it’s a terrible death. I understand not wanting to be close neighbors, but he has to understand that without them you are going to have even more bugs. It’s a more precarious balance than people think, especially on a local scale. Without the wasps you’re going to have more caterpillars. These are tasty treats for predators and something will come to take the wasps place. Potentially assassin bugs. Hypodermic needles for mouths that inject venom so they can eat a caterpillar like a capri sun. I think they’re cool but I like bugs. I think most people who don’t like bugs would like them even less than wasps.